State what is meant by the term transgenic organism.
State one current or potential medical or commercial application of transgenic animal technology.
Once a founder transgenic mammal (such as a sheep engineered to produce a human therapeutic protein in its milk) has been successfully created, it can be cloned using somatic cell nuclear transfer (SCNT). Explain the advantages of cloning this transgenic mammal rather than allowing it to reproduce sexually.
30 exam-style questions on Edexcel IGCSE Biology Genetic modification (genetic engineering). Each one has a worked solution and a mark scheme showing where the marks go.